# Add Form to a Transaction **POST /v2/transactions/{transactionId}/forms** Adds a form to a transaction. **Request Fields:** | Field | Type | Description | |---|---|---| | formLib | string | Form-library identifier of the form to add | ## Servers - https://api.pre.transactiondesk.com: https://api.pre.transactiondesk.com () ## Authentication methods - Bearer auth ## Parameters ### Path parameters - **transactionId** (string(uuid)) Transaction identifier ### Body: application/json (object) - **formLib** (string) Form-library identifier of the form to add ## Responses ### 200 Form added successfully. Returns the created transaction form instance ID. #### Body: application/json (string(uuid)) string(uuid) ### 401 Unauthorized #### Body: application/json (object) - **code** (integer) - **message** (string) - **details** (array) - **data** () [Powered by Bump.sh](https://bump.sh)